Wood-turning machine.



No. 742,840. PATENTED NOV. 3, 1903' W. G. COOPER & J. T. BRADLEY.

WOODTURNING MACHINE.

APPLIOATION FILED mm: 11, 1903.

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No. 742,840- PATENTED NOV. 3.1903. W. G. COOPER & J. T. BRADLEY.

WOOD TURNING MACHINE. APPLICATION FILED JUNE 11, 1903.

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No. 742.840. PATENTED NOV. 3, 1903. W. G. COOPER & J. T. BRADLEY.

WOOD TURNING MACHINE.

APPLICATION TILED JUNE 11. 190s.v

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1 PATBNTED NOV. 3, 1903.

No. 742,840. Y

-W. G. COOPER & J. T. BRADLEY. WOOD TURNING MACHINE;

APPLICATION FILED JUNE 11, 1903. v N0 MODEL. 4 SHEETSSHBET' 4.

WILFORD G. COOPER AND JAMES T.

Patented November 3, 1903.

PATENT OFFI E.

BRADLEY, OF JACKSON, MICHIGAN.

WOOD-TURNING MACHINE.

SPECIFICATION forming part of Letters Patent No. 742,840, dated November 3, 1903.

Application filed June 11, 1903.

T0 at whom it may concern.-

Be it known that we, WILFORD G. COOPER and JAMES T. BRADLEY, citizens of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Wood-Turning Machines; and We do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in Wood-turning machines, and more especially to such machines adapted to turn tapered or irregular forms by means of radially-movable cutters governed byalongitudinally-movable pattern; and its object is to provide a device that is compact and rigid, and thus adapted for heavy work, to provide a device that is simple and durable, and to provide the device with various new and useful features hereinaftermore fully described, and particularly pointed out in the claims.

Our invention consists, essentially, in the novel combination and arrangement of parts whereby the machine is made short and compact and the bearings are close to the cutter and in certain details of construction, as hereinafter more fully described, reference being had to the accompanyingdrawings,inwhich Figure 1 is a side elevation of a device embodying our invention; Fig. 2, an end'elevation of the same; Fig. 3, a vertical section on the line 3 3 of Fig. 2; Fig. 4, a detail in ele vation of the adjustable finishing-cutters, and Fig. 5 a detail of the sleeve for operating the adjusting-levers for the cutters.

Like letters refer to like parts in all of the figures.

A represents a hollow shaft or mandrel rotated by a suitable pulley B, driven by any suitable means. This pulley is preferably made cup shape, as shown, and provided on its web portion with ways 0, between which are radially-movable heads 0, provided with suitable opposing cutters O for making the finishing cut on the work. These cutters may be varied in form to adapt them to the various forms of work to be produced. The heads 0 are radially adjusted by means of levers D, pivoted to the pulley B and engaging the heads at their inner ends and having their Serial No. 160,967. (No model.)

outer ends engaging inclined surfaces E on a sleeve E, slidable longitudinally on the m an drel A and rotated therewith by means of a spline A. This sleeve is journaled in a bearing F, and said bearing is slidable longitudinally in a suitable hanger G. This sliding bearing is adjusted by means of a lever H, engaging a recess in the bearing at one end and intermediately pivoted to the hanger and provided at the other end with a roll I, ongaging and traversing a form J, mounted on a carriage K, said carriage being moved forward during the cutting operation by means of a rack L, fixed on the carriage and oper ated by a pinion M, journaled on a shaft N and driven by a clutch O, operated by any suitable lever O, the shaft N being driven by the main driving-shaft Q through a gear P and pinion P, so proportioned as to move the pattern at the proper speed relative to the feed-rolls. When the clutch is released, the carriage K is returned to the starting position by means of a suitable weight L, connected thereto, as shown in Fig. 3.

To provide an additional bearing for the pulley B and to operate the sizing-cutters and also to retain the heads 0 between the Ways, a cross-bar B is secured within. the pulley and provided with a central opening, concentric with which opening is an outwardly-projecting hollow bearing B, journaled in a suitable hanger. In this bearing is inserted a suitable hollow head S, provided with inwardly-projecting cutters S to size down the work preparatory to the finishing operation of the radially-movable cutters C. To feed the work to these cutters and to hold the same from rotation, a pair of suitable feed-rolls R are located at the front end of the machine, and another similar pair R are located at the rear of the machine. These rolls are mounted in vertically-movable bearings,and means for yieldingly forcing the same toward the axial line of the rotary cutters is provided consisting of pivoted levers T and T, provided with suitable weights T, and to these levers at equal distances from the pivot are rods U and U, extending to and journaled on the respective upper and lower rolls, whereby as the levers T and T are turned on the pivot by the weights the lower rolls R and R are forced upward and the upper rolls R and R are forced downward equally toward the axis of the motion of the cutters. The middle portions of these feed-rolls are provided with toothed surfaces, whereby the work to be operated upon is engaged and forced forward and also held from rotation. To simultaneously rotate these feed-rolls,a counter-shaft V .is provided and connected to the drivingshaft Q by means of sprocket-wheels and a chain W. The lower roll R is driven directly from the driving-shaft Q by means of sprocket wheels and chain X, and the upper roll R is driven from the counter-shaft B by means of sprocket wheels and chain X. The other two rolls are driven bysprocket-wheels and horizontal chains Y from the two firstnamed rolls. The rolls are thus simultaneously driven by means of this system of wheels and chains.

To take up any lost motion in the various parts and to insure accurate work, the heads 0 are forced inward by means of radiallymovable weights Z, mounted in the pulleyA and connected to the heads 0 by rods Z, as shown in Fig. 4. These weights are counteracted by contact of the roll I with the surface of the pattern J, which pattern in the instance shown consists of a tapered pattern for producing tapered work, such as scythesnaths and various like articles. This pattern forces the heads 0 outward in proportion to its vertical thickness. The knives O are thus accurately adjusted and the lost motion of the parts taken up between these oppositely-acting members. It is obvious that by varying the shapeof the cutters and the shape of this pattern a great variety of irregular forms of work can be produced by this machine. It will be observed that by making the bearing Fslidable in the hanger and placing the sleeve within the same the number of parts is materially reduced, a very short and rigid mandrel can be used, the feed-rolls and bearing are brought much closer to the cutters, and the machine made very rigid; also, that by providing a second bearing close in front of the said cutters and with the sizingcutters close thereto the machine is made still more rigid and compact.

Having thus fully described our invention, what we claim, and desire to secure by Letters Patent, is-

1. The combination of a hollow mandrel, radially-movable cutters, a sleeve slidable on the mandrel and connected to the cutters, a bearing surrounding the sleeve and forming the sole support of the mandrel, a support in which the bearing is movable, means for adjustingthe bearing in the support, and means for rotating the mandrel.

2. The combination of a cup-shaped pulley, cutters radially movable on the web of the pulley, a hollow mandrel, on which the pulley is mounted, a sleeve slidable on the mandrel and connected to the cutters, a bearing in which the sleeve is rotative and forming the sole support-for the mandrel, a hangerin which the bearing is slidable and means for moving and adjusting the bearing in the hanger.

3. The combination ofa cup-shaped pulley, cutters radially movable in ways on the web of the pulley, a bar secured in the pulley and holding the cutters in the Ways, a hollow bearing on the bar, a hanger supporting the bearing, a hollow mandrel, a sleeve slidable on the mandrel and connected to the cutters, a bearing supporting the sleeve and mandrel, a hanger in which the bearing is slidable and means for moving and adjusting the bearing in the hanger.

4. The combination ofa cup-shaped pulley, radially-movable cutters in the pulley, a hollow mandrel, attached to the web of thepulley, pivoted levers, extending through the web and attached to the cutters, a sleeve having inclines engaging the outer ends of the lovers, and slidable on the mandrel, and supporting the same, a bearing surrounding and supporting the sleeve, a hanger slidably engaging and supporting the bearing means for adjusting the bearing in the hanger, a crossbar in the pulley, a hollow bearing on the cross-bar, a hanger engaging the hollow hearing and a hollow cutter attached to the bear ing on the cross-bar.

In testimony whereof we affix our signatures in presence of two witnesses.

WILFORD G. COOPER. JAMES T. BRADLEY.

Witnesses:

ALBERT 0. Burton, GROVE H. WOLCOTT. 

